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Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity

Product Details

Key Features

Parametric specs for Hot Swap Controllers
VIN (V) (min) 9
VIN (V) (max) 80
# Channels 1
Circuit Breaker/ Current Limit Current Limit
Fault Condition Control Programmable
Positive/Negative Rail Positive
Package/Pins QSOP/16
Budgetary
Price (See Notes)
2.96
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Simplified Block Diagram

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Parameters

Parametric specs for Hot Swap Controllers
VIN (V) (min) 9
VIN (V) (max) 80
# Channels 1
Circuit Breaker/ Current Limit Current Limit
Fault Condition Control Programmable
Positive/Negative Rail Positive
Package/Pins QSOP/16
Budgetary
Price (See Notes)
2.96

Key Features

  • Provides Safe Hot Swap for +9V to +80V Power Supplies (MAX5934A)
  • Safe Board Insertion and Removal from a Live Backplane
  • Pin-Selectable Active-Low or Active-High Power-Good Output
  • Pin-Selectable Latched or Autoretry Fault Management
  • Programmable Foldback Current Limiting
  • High-Side Drive for an External n-Channel MOSFET
  • Built-In Thermal Shutdown
  • Undervoltage Lockout (UVLO)
  • Pin-Selectable Duty-Cycle Options (0.94%, 1.88%, 3.75%)

Applications/Uses

  • 24V/48V Industrial/Alarm Systems
  • Electronic Circuit Breakers
  • Hot Board Insertion
  • Industrial High-Side Switch/Circuit Breakers
  • Network Routers and Switches

Description

The MAX5934/MAX5934A are fully integrated hot-swap controllers for +9V to +80V (MAX5934A) positive supply rails. The MAX5934 is optimized for +33V to +80V power-supply rails. These devices allow for the safe insertion and removal of circuit cards into a live backplane without causing glitches on the backplane power-supply rail. The MAX5934/MAX5934A feature a programmable analog foldback current limit, programmable undervoltage lockout, and programmable output- voltage slew rate through an external n-channel MOSFET. In addition, if these devices remain in current limit for more than a programmable time, the external n-channel MOSFET latches off.

The MAX5934/MAX5934A feature pin-selectable PWRGD_ assertion polarity (active low or active high) and pin-selectable fault management (latched or autoretry). Other features include automatic restart after a circuit-breaker fault, selectable duty-cycle (DC) options, and thermal-shutdown mode for overtemperature protection.

The MAX5934/MAX5934A operate in the extended (-40°C to +85°C) temperature range and are available in a 16-pin QSOP package.

Simplified Block Diagram

MAX5934, MAX5934A: Typical Application Circuit MAX5934, MAX5934A: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .